Kepler-639 b
A confirmed exoplanet orbiting Kepler-639.
Compared with Earth
- Size
- About 2.4 times Earth's width.
- Year
- A year here lasts about 10 Earth days.
Planet
- Radius
- 2.38 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 10.21 days
- Average distance from its star
- Unknown
Star
- Host star
- Kepler-639
- Spectral class
- G — sun-like
- Surface temperature
- 5,896 K
- Radius
- 1.29 × Sun
- Mass
- 1.14 × Sun
- Age
- 4.37 billion years
System
- Distance from Earth
- 2,773 light-years (850.2 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2016
- Method
- Transit
- Facility
- Kepler
Data from the NASA Exoplanet Archive, synced October 14, 2026.